diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm new file mode 100644 index 0000000000..11a840e0fa --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/x64/ProcessorAsms.Asm @@ -0,0 +1,158 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 2005 - 2007, Intel Corporation
+; All rights reserved. This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution. The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+; ProcessorAsms.Asm
+;
+; Abstract:
+; This is separated from processor.c to allow this functions to be built with /O1
+;
+;
+;------------------------------------------------------------------------------
+
+text SEGMENT
+
+
+;
+; Routine Description:
+; This allows the caller to switch the stack and goes to the new entry point
+;
+; Arguments:
+; EntryPoint - Pointer to the location to enter // rcx
+; Parameter - Parameter to pass in // rdx
+; NewStack - New Location of the stack // r8
+; NewBsp - New BSP // r9 - not used
+;
+; Returns:
+; Nothing. Goes to the Entry Point passing in the new parameters
+;
+SwitchStacks PROC PUBLIC
+
+ ; Adjust stack for
+ ; 1) leave 4 registers space
+ ; 2) let it 16 bytes aligned after call
+ sub r8, 20h
+ and r8w, 0fff0h ; do not assume 16 bytes aligned
+
+ mov rsp, r8 ; rsp = NewStack
+ mov r10, rcx ; save EntryPoint
+ mov rcx, rdx ; Arg1 = Parameter
+ call r10 ; r10 = copy of EntryPoint
+ ;
+ ; no ret as we have a new stack and we jumped to the new location
+ ;
+ ret
+
+SwitchStacks ENDP
+
+
+EFI_SUCCESS equ 0
+EFI_WARN_RETURN_FROM_LONG_JUMP equ 5
+
+;
+; Generated by h2inc run manually
+;
+_EFI_JUMP_BUFFER STRUCT 2t
+_rbx QWORD ?
+_rsp QWORD ?
+_rbp QWORD ?
+_rdi QWORD ?
+_rsi QWORD ?
+_r10 QWORD ?
+_r11 QWORD ?
+_r12 QWORD ?
+_r13 QWORD ?
+_r14 QWORD ?
+_r15 QWORD ?
+_rip QWORD ?
+_EFI_JUMP_BUFFER ENDS
+
+EFI_JUMP_BUFFER TYPEDEF _EFI_JUMP_BUFFER
+
+
+;
+;Routine Description:
+;
+; This routine implements the x64 variant of the SetJump call. Its
+; responsibility is to store system state information for a possible
+; subsequent LongJump.
+;
+;Arguments:
+;
+; Pointer to CPU context save buffer.
+;
+;Returns:
+;
+; EFI_SUCCESS
+;
+; EFI_STATUS
+; EFIAPI
+; TransferControlLongJump (
+; IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This,
+; IN EFI_JUMP_BUFFER *Jump
+; );
+;
+; rcx - *This
+; rdx - JumpBuffer
+;
+PUBLIC TransferControlSetJump
+TransferControlSetJump PROC
+ mov (EFI_JUMP_BUFFER PTR [rdx])._rbx, rbx
+ mov (EFI_JUMP_BUFFER PTR [rdx])._rsp, rsp
+ mov (EFI_JUMP_BUFFER PTR [rdx])._rbp, rbp
+ mov (EFI_JUMP_BUFFER PTR [rdx])._rdi, rdi
+ mov (EFI_JUMP_BUFFER PTR [rdx])._rsi, rsi
+ mov (EFI_JUMP_BUFFER PTR [rdx])._r10, r10
+ mov (EFI_JUMP_BUFFER PTR [rdx])._r11, r11
+ mov (EFI_JUMP_BUFFER PTR [rdx])._r12, r12
+ mov (EFI_JUMP_BUFFER PTR [rdx])._r13, r13
+ mov (EFI_JUMP_BUFFER PTR [rdx])._r14, r14
+ mov (EFI_JUMP_BUFFER PTR [rdx])._r15, r15
+ mov rax, QWORD PTR [rsp+0]
+ mov (EFI_JUMP_BUFFER PTR [rdx])._rip, rax
+ mov rax, EFI_SUCCESS
+ ret
+
+TransferControlSetJump ENDP
+
+;
+; EFI_STATUS
+; EFIAPI
+; TransferControlLongJump (
+; IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, // rcx
+; IN EFI_JUMP_BUFFER *Jump // rdx
+; );
+;
+;
+PUBLIC TransferControlLongJump
+TransferControlLongJump PROC
+ ; set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP
+ mov rax, EFI_WARN_RETURN_FROM_LONG_JUMP
+ mov rbx, (EFI_JUMP_BUFFER PTR [rdx])._rbx
+ mov rsp, (EFI_JUMP_BUFFER PTR [rdx])._rsp
+ mov rbp, (EFI_JUMP_BUFFER PTR [rdx])._rbp
+ mov rdi, (EFI_JUMP_BUFFER PTR [rdx])._rdi
+ mov rsi, (EFI_JUMP_BUFFER PTR [rdx])._rsi
+ mov r10, (EFI_JUMP_BUFFER PTR [rdx])._r10
+ mov r11, (EFI_JUMP_BUFFER PTR [rdx])._r11
+ mov r12, (EFI_JUMP_BUFFER PTR [rdx])._r12
+ mov r13, (EFI_JUMP_BUFFER PTR [rdx])._r13
+ mov r14, (EFI_JUMP_BUFFER PTR [rdx])._r14
+ mov r15, (EFI_JUMP_BUFFER PTR [rdx])._r15
+ add rsp, 8 ;pop the eip
+ jmp QWORD PTR (EFI_JUMP_BUFFER PTR [rdx])._rip
+ ; set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP
+ mov rax, EFI_WARN_RETURN_FROM_LONG_JUMP
+ ret
+TransferControlLongJump ENDP
+
+text ENDS
+END
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